DNA structure

Question 1

What does DNA stand for?

Answer 1

Deoxyribonucleic Acid

Question 2

What is the shape of the DNA molecule?

Answer 2

Double helix

Question 3

True or False: DNA is made up of nucleotides.

Answer 3

True

Question 4

What are the four nitrogenous bases found in DNA?

Answer 4

Adenine, Thymine, Cytosine, Guanine

Question 5

Which nitrogenous base pairs with Adenine?

Answer 5

Thymine

Question 6

Fill in the blank: The backbone of the DNA molecule is made of ______ and phosphates.

Answer 6

sugars

Question 7

What type of bond holds the nitrogenous bases together?

Answer 7

Hydrogen bonds

Question 8

True or False: DNA is found only in the nucleus of eukaryotic cells.

Answer 8

True

Question 9

What is the primary function of DNA?

Answer 9

To store genetic information

Question 10

Which base is not found in DNA?

Answer 10

Uracil

Question 11

What is the process by which DNA is copied called?

Answer 11

Replication

Question 12

Multiple Choice: Which base pairs with Guanine? A) Cytosine B) Thymine C) Adenine D) Uracil

Answer 12

A) Cytosine

Question 13

What is the role of DNA in protein synthesis?

Answer 13

It provides the instructions for assembling amino acids into proteins.

Question 14

Fill in the blank: The two strands of DNA run in ______ directions.

Answer 14

opposite

Question 15

What is a gene?

Answer 15

A segment of DNA that codes for a protein.

Question 16

True or False: DNA can be found in both prokaryotic and eukaryotic cells.

Answer 16

True

Question 17

What is the complementary base pair for Cytosine?

Answer 17

Guanine

Question 18

What sugar is present in DNA?

Answer 18

Deoxyribose

Question 19

Which scientist is known for discovering the structure of DNA?

Answer 19

James Watson and Francis Crick

Question 20

What type of genetic material do viruses often use instead of DNA?

Answer 20

RNA

Question 21

Multiple Choice: What is the function of the enzyme DNA polymerase? A) To synthesize RNA B) To replicate DNA C) To repair DNA D) Both B and C

Answer 21

D) Both B and C

Question 22

Fill in the blank: DNA sequences are read in groups of ______.

Answer 22

three bases (codons)

Question 23

What is the difference between DNA and RNA?

Answer 23

DNA is double-stranded and contains deoxyribose; RNA is single-stranded and contains ribose.

Question 24

What is the importance of the order of bases in DNA?

Answer 24

It determines the genetic code and the traits of an organism.

Question 25

True or False: DNA can undergo mutations.

Answer 25

True

Question 26

What is a mutation?

Answer 26

A change in the DNA sequence.

Question 27

What is the term for the complete set of DNA in an organism?

Answer 27

Genome